/Engine/Source/Runtime/SlateCore/Public/Layout/Clipping.h
[FSlateClippingZone](API\Runtime\SlateCore\Layout\FSlateClippingZone) ConvertRelativeToAbsolute ( const [UE::Slate::FDeprecateVector2DParameter](API\Runtime\SlateCore\Types\FDeprecateVector2DParameter) & WindowOffset ) const